Superabsorbent wound dressing with silicone wound contact layer
AssigneePaul Hartmann AG
InventorsFabien Merckel, Renaud Thiebaut
Life of this patent
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AssigneePaul Hartmann AG
InventorsFabien Merckel, Renaud Thiebaut
Estimating the term…
Wound dressing (10, 30) comprising a backing layer (11, 31), an absorbent pad (12, 32) and a wound contact layer (13, 33), wherein the backing layer (11, 31) comprises a water vapour-permeable and substantially liquid-impermeable film material, wherein the absorbent pad (12, 32) comprises an absorbent core (15, 35) having a proximal side and a distal side, and an envelope (14, 34) surrounding the absorbent core (15, 35), the absorbent core (15, 35) comprising an absorbent material, and wherein the wound contact layer (13, 33) comprises a layer of a skin-friendly silicone adhesive (13b, 33b), characterized in that the envelope (14, 34) comprises a first layer (14a, 34a) of a first liquid-permeable material and a second layer (14b, 34b) of a second material different from the first material, wherein the first layer (14a, 34a) of the envelope (14, 34) covers the proximal side of the absorbent core (15, 35) and wherein the second layer (14b, 34b) of the envelope (14, 34) covers the distal side of the absorbent core (15, 35), and wherein the first layer (14a, 34a) of the envelope (14, 34) extends over the proximal side of the absorbent core (15, 35) and the second layer (14b, 34b) of the envelope (14, 34) extends over the distal side of the absorbent core (15, 35) each of them forming a border area (16, 36) surrounding the absorbent core (15, 35), the first (14a, 34a) and second layer (14b, 34b) of the envelope (14, 34) being joined to each other along the border area (16, 36) surrounding the absorbent core (15, 35).
A wound dressing (10, 30) comprising a backing layer (11, 31), an absorbent pad (12, 32) and a wound contact layer (13, 33), wherein the backing layer (11, 31) comprises a water vapour-permeable and liquid impermeable film material, wherein the absorbent pad (12, 32) comprises an absorbent core (15, 35) having a proximal side and a distal side, and an envelope (14, 34) surrounding the absorbent core (15, 35), the absorbent core (15, 35) comprising an absorbent material, and wherein the wound contact layer (13, 33) is a perforated sheet material which is fully coated by a layer of a skin-friendly silicone adhesive (13b, 33b), and wherein the envelope (14, 34) comprises a first layer (14a, 34a) of a first liquid-permeable non-woven material and a second layer (14b, 34b) of a second material different from the first liquid-permeable non-woven material, wherein the first layer (14a, 34a) of the envelope (14, 34) covers the proximal side of the absorbent core (15, 35) and wherein the second layer (14b, 34b) of the envelope (14, 34) covers the distal side of the absorbent core (15, 35), wherein the first layer (14a, 34a) of the envelope (14, 34) extends over the proximal side of the absorbent core (15, 35) and the second layer (14b, 34b) of the envelope (14, 34) extends over the distal side of the absorbent core (15, 35) each of them forming a first border area (16, 36) surrounding the absorbent core (15, 35), the first (14a, 34a) and second layer (14b, 34b) of the envelope (14, 34) being joined to each other along the first border area (16, 36) surrounding the absorbent core (15, 35), and
Dependencies are inferred from the claim text.